o-Methylisourea bisulfate
o-Methylisourea bisulfate (CAS 29427-58-5), with the molecular formula H₂NC(OCH₃)=NH · H₂SO₄ and a molecular weight of 172.16 g/mol, is a valuable organic compound. It serves as a versatile building block in chemical synthesis and finds applications in various research fields, including cell biology. Its reactive nature makes it suitable for laboratory use and the development of novel chemical entities.
- IUPAC
- 2-Methylpseudourea monosulfate (1:1),OMI®

Chemical Synthesis
This compound is utilised as a building block in organic synthesis, enabling the construction of more complex molecules. It is particularly useful in reactions involving carbonyl compounds and the formation of urea derivatives.
Research and Development
o-Methylisourea bisulfate is employed in laboratory settings for biochemical research, including studies in cell biology. Its properties can be leveraged to investigate biological pathways and targets, such as opioid receptors (OPRD1, OPRK1, OPRM1).
Intermediate Production
As a reactive intermediate, it plays a role in the multi-step synthesis of various chemical products. Its specific structure allows for targeted modifications in the development of fine chemicals and pharmaceutical precursors.
| Molecular weight | 172.16 |
|---|---|
| Linear formula | H2NC(OCH3)=NH · H2SO4 |
| Assay | 99% |
| Melting point | 118-120 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | human ... OPRD1(4985), OPRK1(4986), OPRM1(4988)rat ... Oprd1(24613), Oprm1(25601) |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is o-Methylisourea bisulfate used for?
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o-Methylisourea bisulfate is primarily used as a building block in chemical synthesis and in research applications, including cell biology and the study of opioid receptors.
What is the CAS number and chemical formula for o-Methylisourea bisulfate?
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The CAS number is 29427-58-5 and the chemical formula is H₂NC(OCH₃)=NH · H₂SO₄.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies o-Methylisourea bisulfate with an assay of 99%. This is a research grade material, and TSS does not represent it as USP, BP, or EP.
What are the safety and handling precautions for o-Methylisourea bisulfate?
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o-Methylisourea bisulfate is classified as a Warning substance, causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (type N95), eyeshields, and gloves, should be used. Handle in a well-ventilated area and avoid breathing dust.
How is o-Methylisourea bisulfate packed and exported?
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o-Methylisourea bisulfate is carefully packed to ensure safe transit and is available for export globally by Tech Serve Solutions.
How can I request a quote or sample for o-Methylisourea bisulfate?
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To request a quote or sample, please contact the Tech Serve Solutions sales team through our website or by phone.
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